US 11,748,854 B2
Noise reduction method for high dynamic range videos
Neil Birkbeck, Santa Cruz, CA (US); Balineedu Adsumilli, Sunnyvale, CA (US); and Mohammad Izadi, San Jose, CA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,720.
Application 17/722,720 is a continuation of application No. 16/613,945, granted, now 11,308,585, issued on Apr. 19, 2022, previously published as PCT/US2017/064621, filed on Dec. 5, 2017.
Prior Publication US 2022/0237749 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 5/00 (2006.01)
CPC G06T 5/002 (2013.01) [G06T 2207/10016 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for denoising video content, comprising:
identifying a three-dimensional flat frame block of multiple frames of the video content, wherein the three-dimensional flat frame block comprises flat frame blocks, each flat frame block is located within a respective frame of the multiple frames, and the flat frame blocks have a spatial and a temporal intensity variance that is less than a threshold;
determining an average intensity value of the three-dimensional flat frame block;
determining a noise model that represents noise characteristics of the three-dimensional flat frame block;
generating a denoising function using the average intensity value and the noise model; and
denoising the multiple frames using the denoising function.